:root {
    --bg: #0a0a0a;
    --fg: #e8eaf0;
    --muted: #6b7280;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
    --accent-dim: rgba(139,92,246,0.14);
    --accent-gradient: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 100%);
    --accent-gradient-hover: linear-gradient(135deg, #06b6d4 0%, #7c3aed 100%);
    --card: #131313;
    --border: rgba(255,255,255,0.07);
    --input-bg: rgba(255,255,255,0.05);
    --err: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    background: var(--bg);
    background-image:
        radial-gradient(circle at top right, rgba(139,92,246,0.14) 0%, transparent 55%),
        radial-gradient(circle at bottom left, rgba(34,211,238,0.08) 0%, transparent 55%);
    background-attachment: fixed;
    color: var(--fg);
    font-family: 'Montserrat', -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--fg);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--input-bg);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 5px;
    color: var(--fg);
    font-family: inherit;
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 360px;
    background-color: rgba(0,0,0,0.3);
    border-radius: 10px;
    padding: 30px 32px;
    box-shadow: 0 15px 25px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.05);
    animation: slideInUp 0.5s ease forwards;
}

.login-logo {
    text-align: center;
    margin-bottom: 20px;
}

.login-logo h1 {
    font-size: 30px;
    margin: 0;
    letter-spacing: 0.8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.login-title {
    text-align: center;
    margin-bottom: 22px;
    font-size: 18px;
    color: #fff;
    font-weight: 600;
}

.login-form .form-group {
    margin-bottom: 18px;
}

.login-form .form-control {
    padding: 12px 14px;
    font-size: 14px;
}

.login-form .form-label {
    font-size: 13px;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    border-radius: 5px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.3s ease;
}

.login-btn:hover {
    background: var(--accent-gradient-hover);
    transform: translateY(-3px);
}

.error-message {
    background-color: rgba(220,53,69,0.2);
    color: #dc3545;
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
    border: 1px solid rgba(220,53,69,0.3);
}

@keyframes slideInUp {
    from { transform: translateY(30px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}